Let’s imagine you have a microcontroller board like this ESP32 and you just recorded an awesome sound clip that sounds like this: “Stay Creative!” Now of course you want to playback this sound with the help of the ESP32, so what do you do? Well, the input side is pretty straightforward by simply adding a micro SD card breakout board to the ESP32 through its SPI interface. Due to this fast data line, all the bits of the original audio file can be read by the ESP32 […]

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